Our paper examines the impact of heterogeneous trading technologies for households on asset prices and the distribution of wealth. We distinguish between passive traders who hold fixed portfolios of stocks and bonds, and active traders who adjust their portfolios to changes in expected returns....

We study optimal capital income taxation with a Ramsey problem and relate this optimal taxation problem to the question that has been asked in the asset pricing literature, which is why the risk free interest rate is too low. We show that the Ramsey planner chooses the optimal level of capital...

Our paper examines the impact of heterogeneous trading technologies for households on asset prices and the distribution of wealth. We distinguish between passive traders who hold fixed portfolios of stocks and bonds, and active traders who adjust their portfolios to changes in expected returns....

We introduce limited liability in a model with a continuum of ex ante identical agents who face aggregate and idiosyncratic income risk. These agents can trade a complete menu of contingent claims, but they cannot commit and shares in a Lucas tree serve as collateral to back up their...

Real-world policymakers want to extract investors private information about a policy's likely effects by listening to "asset markets". However, this brings the risk that investors will profitably "manipulate" prices to steer policy. We model the interaction between a policymaker and an informed...

Holmstrom (Bell J Econ 13:324–340, <CitationRef CitationID="CR16">1982</CitationRef>) argues that a principal is required to restrain moral hazard in a team: wasting output in certain states is required to enforce efficient effort, and the principal is a commitment device for the waste. Under competition in commodity and team-formation...</citationref>

The play of a game is a public good because it is "consumed" by each of the players. We model the play as supplied by an organizer managing a team--the demanders of the public good whose actions are unobservable. Competition among organizers leads to a price-quantity description of efficient...